Camera Battery Phone Charger

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USB charger for Pentax D-Li90 batteries. I've been using previous versions of these to recharge my phone (which I use as a GPS) on backpacking trips, but the older versions aren't working as reliably with newer phones. This circuit seems to work better and is much smaller. I usually top off my phone with the batteries when they don't have enough charge for my camera, but I haven't checked to see how well that works with this converter. Uses a step down circuit with USB Port. A USB power meter can be helpful for testing. Ruby Red and Sapphire Blue Translucent PETG from Atomic Filament *affiliate link

About the author:
walterhsiao
3D printing addict. Printing with an Eustathios and Rigidbot 3D printers.

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